IPC Subgroup
E02F 5/02 for digging trenches or ditches
Introduced: September 1968
Last revised: January 2006
Full Title
Dredgers or soil-shifting machines for special purposes > for digging trenches or ditches
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
- Subclass:
- DREDGING; SOIL-SHIFTING
Related Keywords
excavating CUTTINGSsoil-shifting apparatus for digging DITCHESexcavating DRAINSsoil-shifting apparatus for digging TRENCHES
6 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- E02F 5/04 with digging screws
- E02F 5/06 with digging elements mounted on an endless chain
- E02F 5/08 with digging wheels turning round an axis
- E02F 5/1 with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
- E02F 5/12 with equipment for back-filling trenches or ditches
- E02F 5/14 Component parts for trench excavators, e.g. indicating devices
Top Applicants
Top 10 applicants by patent filingsfor class E02, 2013–2023, worldwide · Source: EPO PATSTAT
- KOMATSU JP 3,549
- CATERPILLAR US 2,893
- HITACHI CONSTRUCTION MACHINERY COMPANY JP 2,390
- HITACHI CONSTRUCTION MACHINERY COMPANY 2,340
- POWERCHINA HUADONG ENGINEERING CORPORATION 2,336
- CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 2,174
- SGCC(STATE GRID CORPORATION OF CHINA) 2,119
- HOHAI UNIVERSITY 1,821
- KOMATSU 1,775
- POWERCHINA GUIYANG ENGINEERING CORPORATION 1,725